**1. 继承HttpServlet**
```java
/**
* @WebServlet注解指定请求地址
*/
@WebServlet("/index")
public class IndexServlet extends HttpServlet {
@Override
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
@Override
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setAttribute("info", "Index");
request.getRequestDispatcher("WEB-INF/views/index.jsp").forward(request, response);
}
}
```
**2. `WEB-INF/views/index.jsp`页面**
```html
<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
<title>Index</title>
</head>
<body>
<h1>${ info }</h1>
</body>
</html>
```
**3. 访问：http://localhost:8080/web/index**
